2 wheels force is put on the back gear to push a larger gear on front . when pedalling on flat force should be applied on middle to smaller size. However when bike reached a terminal force it rider will move to smaller gear and go faster. If bike is going down hill the force of gravity will mean rider can manage the smallest gear as in fastest speed as Force = Mass × Velocity and the impact of gravity means less force is required as the weight of the bike and rider However the opposite it through for uphill as the rider is going against gravity ..weight and gravity will mean the rider will need to go to the larger gear the slower speed.
There are other factors as in wind and slip stream and type of pedals to maximise the force.
Energy transformations is a process of an energy form transforming into a new form of energy. Like thermal energy, mechanical, etc. An example; when we eat; it turns from chemical energy to mechanical or electrical to heat. Like a plug and to activate a toaster.
When a current is passed through a coil of wire with a piece of iron inside, the one that will be formed is :
an electromagnet
It happens when a soft metal core made into magnet by passage of electric current
hope this helps
Answer:
c
Explanation:
because the other would not make sense
Answer:
432 km = 432000 m
Explanation:
Primeiro, vamos converter m/s para km/h:
12 m/s = (12 . 3,6)km/h = 43,2 km/h
Agora é só descobrir a distancia que ele percorre em 10 h:
s=43,2.10 = 432 km
Aí se você quiser colocar na medida do Sistema Internacional:
